DC Shunt Motor

Discussion in 'Homework Help' started by TimWillz, Dec 18, 2012.

  1. TimWillz

    Thread Starter New Member

    Dec 18, 2012
    1
    0
    A shunt motor rotated a constant mechanical load at 895 rpm. The motor has the following parameters: RA=0.24Ω RF=165Ω PMECH=265W.When a voltage of 180v is applied to the motor the armature current IA=12.4A. Calculate the speed and efficiency of the motor if 240v was applied.

    Cant seem to get going on this one, anyone help?
     
  2. charanbandi

    New Member

    May 17, 2012
    18
    0
    Review the question once..it s probably wrong....how could a shunt motor with 0.24 Ra with applied voltage of 180v have a Ia of 12.4A
     
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